The use of smartphones for a long time has led to 'tech neck', causing a hunched cervical spine and even spinal cord damage.

This is called a cervical myelopathy and surgery is recommended. Often, a procedure is performed to close the space that’s left when the disc is removed and restore the spine to its original length.

Therefore, the primary purpose of the study was to determine which side of the upper cervical spine cavitates during rotatory C1–2 HVLA thrust manipulation. Secondary aims of the study were to ...